JP5660541B2 - Click-type plywood flooring - Google Patents

Description

  The present invention relates to a plywood flooring, and more specifically, in order to provide a flooring having all the advantages of a reinforced flooring and a plywood flooring, the plywood is subjected to a heat compression treatment, and the plywood is click-shaped. It is related with the plywood flooring which provided.

  It is said that the plywood flooring is relatively superior to the reinforced floor in terms of dimensional stability of the flooring, and that the reinforced floor is superior in construction speed.

  The specific reason is that the plywood is superior in dimensional stability, and the construction speed is higher in the click connection method (reinforced flooring) than in the use of a construction rubber hammer (plywood flooring). Because it is fast.

  In Patent Document 1, a plywood floor material obtained by laminating a plurality of wood layers and bonding each wood layer has a main body portion and a real portion protruding from at least one side surface of the main body portion, and other It has a recess for fitting with the actual part of the other plywood flooring on the side, and the step between the actual part and the side of the main body is used to drive the reinforcement tool toward the main body. A plywood flooring characterized by forming a groove is disclosed, but the real part and the concave part have a T & G (Tongue and Groove) coupling structure.

  In Patent Document 2, an end insertion portion having an end downward projection that protrudes outward on the end side surface and protrudes downward on the lower surface, and a downward bay is formed on the lower surface that is recessed inward at the center of the other end side surface. A side projection formed on one side end of a floor board material for floor construction comprising an end receiving portion having a lower end groove and paired with an end insertion portion, and a hot melt adhesive attached to the back surface And a side insertion portion having a side downward projection protruding downward on the lower surface so as not to be continuous with the side projection, and a point where a downward bay is formed in an arc shape inside a side receiving groove formed at the other side end A side receiving portion having a lower side groove extending upwardly from the lower end groove, and an upper end protrusion extending outward from the lower end groove and protruding upward and having a predetermined guide angle of about 30 degrees on one side. The floor board | plate material for floor construction characterized by this is disclosed.

  In Patent Document 3, a protrusion having a predetermined length is formed on two surfaces on one side, and an insertion groove having a predetermined depth is formed on the two surfaces on the other side so as to fit the protrusion. The plate has a rectangular shape with a groove formed so as to prevent the deformation of itself, and the lower part of the plate has a predetermined thickness so as to alleviate the load and impact applied from the upper part of the plate. A space of a predetermined size is formed in the lower part of the elastic material so that the insertion groove side portion of the plate material is smaller than the plate material, and the protruding portion side portion of the plate material is inserted into the insertion groove when a plurality of plate materials are joined. A plywood material configured to be larger than the board material is attached to the lower part of the plywood material so as to form a bonding part to be attached to the elastic material of the other flooring material to be assembled and to support the joint part of the projection part There are a plurality of fixing nails so that the plate material, elastic material, and plywood material are fixedly connected. While prefabricated flooring, characterized in that the input is disclosed, wherein the projecting groove and the insertion groove is T & G binding structure.

  Patent Document 4 discloses an ondol floor in which a composite panel of wood fiber and plastic fiber is used as a base material and natural veneer is laminated on the upper part. In the case of this device, the main purpose of the device is to strengthen the surface properties, which are the disadvantages of plywood flooring, and to freely provide the texture and appearance effect of the surface design, and the dimensional stability is similar to that of plywood flooring. It is a level.

  When the click shape is provided on the flooring material, the construction is convenient, so much research has been done to provide the click shape on base materials such as plywood, high-density fiberboard (HDF), solid goods, etc., both at home and abroad. Has been made.

With the technology up to now, it is easy to provide a click shape on a base material of HDF or solid material, but plywood has some difficulties. The reason is that the density of plywood ^{(0.4g / cm 3 ~0.6g / cm} 3) is, HDF (0.8g / cm ³⁾ and for relatively low compared with solid wood, the click-shaped plywood When provided, the click shape is broken or the click processing surface does not become smooth. For this reason, there are no domestic products that have been commercialized with a click shape on plywood.

  In addition, existing plywood flooring is worried about indoor air environment due to formaldehyde generated after construction. The reason is mainly the synthetic resin used at the time of plywood manufacture and the construction adhesive used at the time of plywood flooring construction.

JP 2002-194485 A Korean Patent Registration No. 674210 Korean Utility Model Registration No. 359803 Korean Utility Model Registration No. 399316 Korean Registered Patent No. 430315

  In order to solve the above-mentioned problem, the present invention involves immersing the plywood in a synthetic resin at the time of manufacturing the plywood, and performing a heat compression treatment. Specifically, the dimensional stability of the plywood is improved through a resin dipping method, and the heat compression treatment is performed. After improving the density of the plywood through, by finally providing a click shape to the plywood, it has a click shape like a reinforced flooring and is excellent in dimensional stability, and furthermore, because it is a high-density plywood base material, A plywood flooring with improved surface properties compared to general plywood has been developed.

  Accordingly, an object of the present invention is to provide a flooring material having all three advantages of a reinforced flooring material and a plywood flooring material, that is, excellent dimensional stability, excellent surface physical properties, and quick workability. .

  Another object of the present invention is a plywood flooring that can solve the problem of indoor air environment by using a non-adhesive type flooring that does not require a construction adhesive and further uses an environmentally friendly synthetic resin. Is to provide.

  In order to achieve the above object, a plywood flooring according to an embodiment of the present invention uses a heat-compressed plywood as a base material.

  The plywood flooring according to another embodiment of the present invention uses a plywood immersed in a synthetic resin as a base material.

  A plywood flooring according to still another embodiment of the present invention uses a plywood immersed in a synthetic resin and subjected to heat compression treatment as a base material.

  In the present invention, the resin immersion of the plywood contributes to the improvement of dimensional stability, and the thermal compression treatment of the plywood contributes not only to the dimensional stability but also to the improvement of the surface properties.

  In the present invention, at least a plywood is resin-immersed or heat-compressed is used as a base material, preferably a resin-immersed and heat-compressed plywood is used as a base material.

  The plywood used in the present invention is firstly increased in density by thermal compression treatment, and improved in surface properties such as dent resistance, scratch resistance and printing quality, and secondly, a binder (synthetic Resin) Because the plywood is manufactured using the dipping / bonding method, it has better dimensional stability than the existing single plate surface coating / bonding method, and thirdly, it has a high density, so it can be processed in a click shape like HDF. It is possible and has a construction effect like a reinforced flooring.

The thickness of the plywood subjected to the heat compression treatment in the present invention is reduced by 0.1% to 50%, preferably 1% to 20%, and more preferably 10%, compared with that before the heat compression treatment. Moreover, the density of the plywood subjected to the heat compression treatment according to the present invention is 0.6 g / cm ^{3 to} 2.0 g / cm ³ , preferably 0.6 g / cm ^{3 to} 1.0 g / cm ³ , and more preferably 0.00. 7 g / cm ³ .

  In the present invention, the synthetic resin is a low-viscosity synthetic resin having a viscosity of 100 cp to 20,000 cp for smooth immersion.

  As the synthetic resin in the present invention, phenol resin, acrylic resin, melamine resin, urethane resin, urea resin, melamine / urea co-condensation synthetic resin, melamine / phenol co-condensation synthetic resin, vinyl acetate resin and the like can be used.

  The plywood floor material of the present invention is a non-adhesive plywood floor material or an adhesive plywood floor material.

  In the case of the adhesive type, the plywood is bonded to the bottom portion with an adhesive, and at least immersed plywood is used. Since the construction adhesive exhibits a bonding force, a T & G (Tongue and Groove) bonding structure can be adopted. A click coupling structure can also be used, and the click shape at this time only needs a simple coupling function, and the click structure may be a simple structure. On the other hand, in the case of the adhesive type, when a simple bonding structure of T & G or T & G level of low difficulty is adopted, the thermal compression treatment of the plywood can be omitted, but click bonding is adopted like a reinforced flooring material. In some cases, an appropriate thermal compression process must be performed.

  In the case of the non-adhesive type, the plywood is not bonded to the bottom, and at least a heat-compressed plywood is used, and the plywood is constructed by a click coupling structure provided on the side surface of the heat-compressed plywood. In the case of the non-adhesive type, since there is no adhesive for construction, the T & G coupling structure cannot be adopted, and the click structure must be adopted. In addition, the click structure is complicated because the click itself must exert a strong binding force. To form a click structure, the plywood must be preceded by thermal compression treatment, and by applying a click shape to the high density plywood obtained through the thermal compression treatment of the plywood, the click shape like a reinforced floor In addition, it is possible to provide a non-adhesive plywood flooring excellent in dimensional stability and surface physical properties.

  The plywood flooring of the present invention consists of a surface protective layer, a surface layer, and a plywood from the top, where the surface layer can consist of a veneer, a printing layer, or a printing film.

  In the present invention, a groove is formed on the back surface of the plywood, and this groove reduces the dimensional change of the plywood flooring and improves the adhesion to the bottom.

  According to the present invention, a foam is laminated on the lower part of the plywood, and in particular, a product in which the foam is attached to the lower part of the plywood and integrated with the plywood can be provided. Since the foam is laminated on the lower part of the plywood, it is possible to provide smoothness and to prevent the impact and noise between the plywood flooring product and the bottom part.

It is sectional drawing of the adhesive-type click plywood flooring by this invention. It is sectional drawing of the non-adhesion type click plywood flooring by this invention.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view of an adhesive click plywood flooring according to the present invention. This plywood flooring is composed of a surface protection layer 10, a surface layer 20, and a plywood 30 from above. The plywood 30 and the bottom 60 are bonded together with an adhesive 40.

  When construction adhesive is used for adhesive plywood flooring with the structure shown in Fig. 1, T & G or a simple T & G bonding structure with low difficulty can be used. In this case, thermal compression treatment of plywood Can be omitted. Here, the plywood used is at least immersed in resin.

  FIG. 2 is a cross-sectional view of a non-adhesive click plywood floor material according to the present invention. This plywood floor material is composed of a surface protective layer 10, a surface layer 20, a plywood 30, and a foam 50 from above. Are coupled to each other by a click coupling structure 31.

  In the case of the non-adhesive plywood flooring having the structure of FIG. 2, by providing a click shape on the high density plywood obtained through the thermocompression treatment of the plywood, it has a click shape like a reinforced flooring and dimensional stability. And excellent surface properties. Here, the plywood is at least heat-compressed. Since the click structure of FIG. 2 always uses a plywood that has been subjected to heat compression treatment, it can be formed with a more complicated structure than the click structure of FIG.

  The base material of the existing plywood flooring has a low density to process the click shape, and the click shape is broken or the processing surface becomes rough, but the click shape is provided on the plywood base material that has been heat-compressed according to the present invention. This solves the problem of the existing structure and eliminates the need for an adhesive for construction.

  The surface protective layer 10 is a layer that protects the surface, and can be formed, for example, by applying a UV curable paint and then curing.

  The surface layer 20 is a layer that embodies the appearance effect. For example, a veneer, a printing layer, a printing film, or the like can be used. The veneer can be used from a general veneer having a thickness of about 0.5 mm to a hard veneer having a thickness of about 3 mm, a transfer printing layer or the like can be used as a printing layer, and a polyethylene terephthalate (PET) can be used as a printing film. ), Polyvinyl chloride (PVC) film, and the like.

  The plywood 30 is a base material layer that provides dimensional safety and surface physical properties, and a plywood that has been dipped in a synthetic resin and / or heat-compressed can be used.

  A typical method for manufacturing plywood is divided into single plate manufacturing → single plate drying / repair → single plate adhesive application → single plate lamination / hot pressure → completion.

  The manufacturing method of the plywood according to the present invention includes a single plate manufacturing → single plate synthetic resin immersion → single plate drying / repair → single plate lamination / thermal compression treatment → completion method.

  The advantage of the plywood manufacturing method according to the present invention is that the resin penetrates into the inside of the veneer by the resin dipping method, so that the bonding force and the dimensional stability are remarkably superior to the single plate surface bonding method which is a normal plywood manufacturing method. . Further, by increasing the plywood density by heat compression treatment, it is possible to provide a click shape with a high degree of difficulty such as a reinforced flooring material.

  As the synthetic resin, it is preferable to use a low-viscosity resin that can be smoothly immersed. The viscosity of the synthetic resin is preferably 100 cp to 20,000 cp. As the synthetic resin, phenol resin, acrylic resin, melamine resin, urethane resin, urea resin, melamine / urea co-condensation synthetic resin, melamine / phenol co-condensation synthetic resin, vinyl acetate resin and the like can be used.

Moreover, the conditions of the heat compression treatment can freely adjust the heat, pressure, and temperature according to the tree species and usage, and the plywood density level in the structure of the present invention is 0.6 g / cm ^{3 to} 1.0 g / cm. ³ .

  By forming the click coupling structure 31 on the side surface of the plywood 30, the construction speed is remarkably improved.

  The click coupling system is a glueless mechanical coupling system in which the protrusions and grooves are joined together in a curvilinear form and formed in both vertical and horizontal directions, so that the vertical It is a system that is simultaneously coupled not only in the direction but also in the horizontal direction.

  Specifically, for example, as disclosed in Patent Document 5, the present invention is applied to a rigid bottom panel constituting a bottom lid, and this panel is rectangular or square, and the panel includes a first pair and There is a second pair of opposing sides, and at least the edges of the second pair of opposing sides of the panel are formed with projections and groove-shaped couplings, and these couplings have associated edges. An integral mechanical coupling means including each longitudinally extending coupling element is provided, and the coupling means is composed of a panel core and a single piece, and the coupling part is connected with the two panels connected to each other. Forming a bond not only in the direction perpendicular to the edges connected with the coupling means and parallel to the plane of the panel, but also in the direction perpendicular to the plane of the panel, the core material being composed of HDF plate or MDF plate, The coupling part and the coupling means formed from the core, such as, form a snap connection where the coupling elements are firmly coupled from the back of each other by shifting the bottom panels side by side parallel to each other. Thus, the two bottom panels are connected to each other.

  A large number of grooves 32 are formed on the back surface of the plywood 30 for the purpose of improving the dimensional stability of the plywood flooring and the adhesion to the floor 60. For example, the groove width can be 1 mm to 2 mm, the groove height can be 1 mm to 4 mm, and the groove interval can be 10 mm to 90 mm.

  The adhesive 40 is for bonding the plywood flooring to the bottom 60, and an epoxy adhesive or the like can be used.

  The foam 50 blocks moisture from the bottom 60, provides smoothness of the bottom, and prevents impact and noise between the plywood flooring product and the bottom 60. For example, foamed polyurethane (PU) is used. be able to. The method of laminating the plywood 30 and the foam 50 is the same as a normal method for constructing a reinforced floor. For example, a sheet of the foam 50 is spread over the entire bottom and laid in advance to construct the flooring. Or the foam 50 can be attached to the lower part of the plywood 30, and the product with which the plywood 30 and the foam 50 were integrated can be provided.

[Example 1]
As a base material, the heat compression treatment was omitted, and a plywood immersed in a synthetic resin having a viscosity of 1,000 cp was used. A simple combined click shape as shown in FIG. 1 was formed on the side surface, and a groove was formed on the back surface. . Veneer was used as the surface layer, and a surface protective layer was formed with UV paint. A plywood flooring having a structure as shown in FIG. 1 was manufactured by bonding the plywood and the bottom with an epoxy adhesive.

[Example 2]
Using a plywood soaked (using a synthetic resin with a viscosity of 1,000 cp) and heat-compressed (density 0.7 g / cm ³ ) as a base material, a highly difficult click shape as shown in FIG. 2 is formed on the side surface. did. Veneer was used as the surface layer, and a surface protective layer was formed with UV paint. A plywood flooring having a structure as shown in FIG. 2 was manufactured by laminating foamed polyurethane under the plywood.

[Example 3]
A resin-immersed (using a synthetic resin with a viscosity of 1,000 cp) and heat-compressed (density 0.7 g / cm ³ ) plywood was used as a substrate, and a click shape as shown in FIG. 2 was formed on the side surface. A printing film was used as the surface layer, and a surface protective layer was formed with UV paint. A plywood flooring having a structure as shown in FIG. 2 was manufactured by laminating foamed polyurethane under the plywood.

[Comparative Example 1]
As disclosed in Patent Document 1, a plywood floor material in which a T & G joint structure is formed on a plywood.

[Comparative Example 2]
As disclosed in Patent Document 2, a reinforced floor material in which a click structure is formed by laminating a high-pressure melamine laminate (HPM) or the like on a base plate (base material) such as a high-density fiberboard (HDF).

[Test example]
Dimensional stability and surface properties were measured for the flooring materials of Examples and Comparative Examples, and the results are shown in Table 1.

  In Table 1, heating for dimensional stability is performed by putting the products of Examples and Comparative Examples into a drying oven at 80 ° C. for 24 hours, and immersion is performed in room temperature water for 24 hours according to the evaluation standard KS-F-3200. After the introduction, the dimensional change rate before and after the introduction was measured in the longitudinal direction (L) and the width direction (W) of the product.

  In Table 1, the dent and crack properties of the surface properties are the drop height at which dents and cracks on the product surface occur when an iron ball with a weight of 286 g is naturally dropped on the product surface according to the evaluation standard KS-F-3104. This is a measure of the thickness. Scratch is a measurement of the force generated by a scratch when the product surface is rubbed with a blade at a specific force.

  As can be seen from Table 1, in the case of the examples, the dimensional stability and surface properties are generally excellent due to the effect of the plywood substrate subjected to resin immersion and heat compression treatment. It was found to be much better than the material.

  Moreover, in the case of Example 2 and 3 which provided the high difficulty click structure, the construction speed similar to the conventional reinforced flooring (comparative example 2) was shown.

  The plywood flooring of the present invention can have all of excellent dimensional stability, excellent surface properties, and quick workability, which are advantages of a reinforced flooring and a plywood flooring.

  In addition, according to the present invention, by providing a click shape to a high density plywood obtained through thermal compression treatment of the plywood, it has a click shape like a reinforced flooring material, and is non-adhesive with excellent dimensional stability and surface physical properties. A plywood flooring can be provided, and when a construction adhesive is used, a plywood thermal compression treatment is omitted and a click shape is applied to provide an adhesive plywood flooring that improves the construction speed. be able to.

  Furthermore, the problem of the indoor air environment can be solved by using the environmentally friendly synthetic resin and constructing the flooring material in a non-adhesive manner that does not require a construction adhesive.

DESCRIPTION OF SYMBOLS 10 Surface protective layer 20 Surface layer 30 Plywood 31 Click coupling structure 32 Groove 40 Bottom 50 Foam 60 Floor

Claims (9)

Viscosity immersed in synthetic resin 100Cp～20,000cp, and a heat compression treated plywood such that the density is 0.6g ^/ cm ³ ~1.0g ^/ cm 3 was used as the substrate, the now The synthetic resin is at least one selected from phenol resin, acrylic resin, melamine resin, urethane resin, urea resin, melamine / urea co-condensation synthetic resin, melamine / phenol co-condensation synthetic resin, and vinyl acetate resin. Characteristic plywood flooring.   The plywood flooring according to claim 1, wherein the plywood has a click coupling structure on a side surface, and the plywood and the floor are non-adhesive.   2. The plywood flooring according to claim 1, wherein the plywood is of an adhesive type that is bonded to the floor with an adhesive. The plywood flooring according to claim 3 , wherein the plywood has a T & G (Tongue and Groove) coupling structure on a side surface of the plywood.   The plywood flooring according to claim 1, comprising a surface protective layer, a surface layer, and plywood from above. The plywood flooring according to claim 5 , wherein the surface layer is made of veneer, printing layer or printing film.   The plywood flooring according to claim 1, wherein a groove is formed on the back surface of the plywood.   The plywood flooring according to claim 1, wherein a foam is laminated on the lower part of the plywood. The plywood flooring according to claim 8 , wherein a foam is attached to the lower part of the plywood and integrated with the plywood.

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